81914060 has 12 divisors (see below), whose sum is σ = 172019568. Its totient is φ = 32765616.

The previous prime is 81914057. The next prime is 81914069. The reversal of 81914060 is 6041918.

It is not an unprimeable number, because it can be changed into a prime (81914069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2047832 + ... + 2047871.

It is an arithmetic number, because the mean of its divisors is an integer number (14334964).

Almost surely, 2^81914060 is an apocalyptic number.

It is an amenable number.

81914060 is an abundant number, since it is smaller than the sum of its proper divisors (90105508).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

81914060 is a wasteful number, since it uses less digits than its factorization.

81914060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4095712 (or 4095710 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 81914060 is about 9050.6386514986. The cubic root of 81914060 is about 434.2963212396.

Adding to 81914060 its reverse (6041918), we get a palindrome (87955978).

The spelling of 81914060 in words is "eighty-one million, nine hundred fourteen thousand, sixty".